package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;

/**
 * 用户登录功能
 */
public class LoginDemo {
    public static void main(String[] args) {
        UserInfo userInfo = InputUtil.getInputObject(new UserInfo(),"欢迎登录","登录");
        System.out.println(userInfo);
        try (
                Connection connection = DBUtil.getConnection();
        ){
            Statement statement = connection.createStatement();
            String sql = "SELECT id,username,password,nickname,age " +
                    " FROM userinfo " +
                    " WHERE username='"+userInfo.getUsername()+"' AND password='"+userInfo.getPassword()+"'";
            ResultSet rs = statement.executeQuery(sql);
            if (rs.next()) {
                System.out.println("登陆成功,欢迎你:"+rs.getString("nickname"));
            }else {
                System.out.println("用户名或密码错误");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}